Splice for elastic webbing



mama osez?, 1931 UNITED STATES PATENT; ori-ica annum msm, or rnmAnmniA, imvNaYLvAmA armen ron. nLAs'ric mame Appiieauon mea December 2o, isso. serai im. 503.696.

The present invention relates vto elastic webbin splice or such elastic webbing.

Heretofore the joining of ends of elastic 55 webbing has tended to injure and break the 4 ance but weakening its elastic structure andy reducin its useful life.

The o ject of this invention is to join the ends of elastic webbing in an improved manner so as to overcome the foregoin objections; to ifpermit the joint-to be easily and cheaply e ected; and to provide a joint which is both strong and durable and atthe same time lneat in appearance.

The `various features of novelty which characterize my invention are pointed out with particularity in the claims annexed to and forming a part of this specification. For

a better understanding of the invention, however, and the advantages possessed by it, reference should be had to the following descrip- 39 tive matter and accompanying drawings, 1n l which I have described and illustrated one embodiment of my invention:

In the drawings: 4

Fig. 1 is a fragmentary perspective View,

showing the ends of the webbing superimposed and connected by a transverse row o stitching; y

Fig. 2 isl a side elevationshowing the webbing ends spread apart or opened;

Fig. 3 is a similar view showing the seam opened to provide the turn-bucle portions;

Fig. 4 is a similar view showing the backing and reinforcing strip applied over the turn-back portions; A t Fig. 5 is a fr entary plan view showin the backing` an reinforcing strip stitch into'position; l

Fig. .6 is a transverse section on line 6-6 W- of Fig. 5.

My' vinvention is applicable to various and .particularly to an improved bing ends at a suitable distance from their exvstrip) is preferably of the'same width as the forms of elastic webbing havin a plurality of parallel strands or so-calle threads of elastick rubber incorporated therein and runnlng longitudinally thereof, with the adjacent rubber threads, or atleast some of them, spaced apart transversely. f

In the present instance I have shown a webbing containing eight (8) rubber threads, allV spaced a art transversely, except two of such rubber t reads which arearran ed against each other and extend sidevb si e along the middle of' the webbing. owever, this is merely for the purpose of illustration and it is to be understood that webbing having any desired number of threads and any suitable arrangement thereof may be used.

Accordin to my invention, two ends of webbing to ejoined, which are vdesignated 1 and 2, respectively are placed one upon the .other in Alongitudinal alinement, -with their 70 fronts or faces together and with their extremities substantially Hush with each other. A row of preferably li ht stitching 3 is run transversely across such superimposed webtremities, as shown in Fig. 1, so as to formAIA a seam connecting the webbing ends together. The webbing ends are then spread apart or opened, as shown in Fig. 2, to bringtheir fronts or faces to the outside, and the seam is 30 opened, as shown in Fig. 3, so that the terminal portions -of the webbing are folded or doubled over against the backs of the cor res onding webbin ends and form turnbac portions 4. he len hfof the` turne5 f -back portions may be varie according to the size and strength vef the webbing, by suitably locating the stitching 3.

A backin andreinforcing strip 5 of any desi-red ine astic and substantially nonstretchable f fabric which has suitable strength and durability, is a plied over the turnback portions Bto span t e seam. This web ing and of a length to extend'a 'short' 95 distance beyondthe extremities of the respective turnback portions.

The backing" and reinforcing strip is stitched in position to complete the joint, and the manner of effecting this is an important feature of the present invention. A suitable number of longitudinal rows of stitching 6 is employed. Each row extends lengthwise across the seam formed by the transverse row of stitching 3; passes through the backin strip 5, the turn-back portions 4 and the we bing ends 1 and 2; and is located between adjacent transversely spaced rubber threads 7 in the webbing. (See Figs.5 and 6.)

I j preferably, although not necessarily start each row of stitching 6 inside of an en edge of the backing strip 5; run the stitching lon 'tudinally across such edge to a point a s ort distance beyond the same; then reverse the stitching upon itself and run it lonitudinally in the opposite direction onto the ackin strip 'and throu hout the lengteh' thereo and to a oint as ort distanceV yond the other en edge of the backing strip;

again reverse the stitching upon itself and run it lo 'tudinally in the opposite direction onto the acking strip; and stop or finish it oli within the adjacent end edge of such backing stri so that both the starting and finishin en 8 of each row of stitching 6 are inside, 1. e. within the area, of the backing ing and perhaps breaking the rubber t reads.

As the longitudinal stitching holds the webbin ends 1 and 2 firmly to the inelastic and su stantially non-stretchable backing strip 5, the portions of the webbing lying inside of and between the opposite end edges of the backing strip 'are prevented from stretching and form what may be termed a dead area adjacent the joint. By virtue of this dead area the portions of the rubber threads l ing within such area are substantially relieved of tension when the webbing is stretched from time to time, and hence anyrubber threads which may have been injured or broken in the running of the transverse row of stitching 3, will remain in place and have no tendency to creep.

Through having the lo tudinal rows of stitching begin and end inside of the dead area,I strain on such stitching upon the stretching of the webbing is minimized, and the stitching will not tend to pull out and unravel, as would be the case if it started and stopped outside of the dead area and in the stretchable Dart of the webbing.

This'invention, therefore, not only pro- I vides a simple, strong, effective and neat joint between the webbing ends, but also safeguards the rubber threads and obviates the danger of their creeping away from the joint in the stretching of the webbing from time to time. Both the elastic structure of the webbing and its appearance are thus reserved, `and its useful life prolonged. ligurthermore, it will be apparent that the method of forming the joint may be easily and cheaply practiced.

It is to be understood that various changes may be made in the present embodiment of the invention without departin from the spirit thereof and its scope as de ed in the appended claims. f

lHaving thus described -my invention, I

claim and desire to protect by Letters Patent v of the United States:

1. The combination with two ends of elastic webbing to bek secured together with their elastic threads substantially matching, of an inelastic backing strip bridging the joint between such'ends, and stitching arranged par, allel to and between adjacent elastic threads of webbing and extending through the backing stripvand said webbing ends, on opposite si es of the joint.

2. The combination with two ends of elastic webbing to be secured together, having turn-back portions at the joint therebetween, of an inelastic backing strip extending over said turn-back portions and bridging the joint, and one or more rows of stitching extending longitudinally across the joint and through the backing strip, the webbin Y ends and the turn-back portions thereo said stitching being arranged parallel to and be `ween adjacent rubber threads of the web- 3. The combination with two endsI of elastic4 webbing ,to be secured together, of a trans'- 4195 verse row of stitchingformin a seam` con.-` necting such webbing ends, an also providing turn-back ortions on the respective webbing ends at t e back thereof and on o osite sides of the seam, an inelastic bac ng strip extending over the turn-back portions and bridging the seam, and one or more r'ows of stitching extending lon itudinally across the seam and through the backing strip, the turnfback portions and the said webbing ends and arranged parallel to and between adjacent rubber threads of the webbing. f

4. The combination with two ends of elastic webbing to be secured together, of aninelastic backing strip bridging the joint therebetween, and one or more rows of stitching extending longitudinally across the joint and through the backing strip and the said webbing ends and arranged parallel to and between Vadjacent rubber threads of webbing, each longitudinal row of stitching having its startin and stopping points within the area of the ackin strip.

5. The com ination with two ends of elastic webbing to be secured together, of an 13o elastic backing strip bridging the joint therebetween, and one or more rows of stitching extending longitudinally across the joint an through the backing strip and the said webbing ends and arranged parallel to and between ad'acent rubber threads of webbing, each lon itudinal row of stitching extending beyond tie opposite ends of the backing strip and being reversed upon itself with its starting and stopping points within the area of j the backing strip.

6. The combination with two endsof elastic webbing to be secured together, of a transverse row of stitching forming a seam connecting such webbing ends, and also providing turn-back portions on the respective webbing ends at the back thereof and on opposite sides of the seam, an inelastic backing strip extending over the turn-back portions and bridging the seam, and one or more rows of stitching extending longitudinally across the joint and through the backing strip, the turnback portions and the said webbing ends and arranged parallel to and between adjacent rubber threads of the webbing, each longitudinal row of stitching having its starting and stopping points within the area of the backing strip.

7. The combination with two portions of material to be secured together, one of which is of elastic webbing having its elastic threads running toward the joint, of an inelastic backing strip bridging the joint between such portions, and stitching extending through such backing strip and said portions, on opposite sides of the joint, the stitching which extends through the backing strip and the portion of the material which is of elastic webbing, being arranged parallel to and between adjacent elastic threads of such webbing. v

8. The combination with .two portions of material to be secured together, one of which j is of elastic webbing having its elastic threads running toward the joint, of an inelastic backing strip bridging the, joint between such I portions, and stitching extending through such backing strip and said portions, on opposite sides of the joint, the stitching which extends through the backing strip and the portion of material which is of elastic webbing, being arranged parallel to and between adjaoent elastic threads of such webbing, and any terminals of such stitching on the elastic webbing side of the joint being within the area of the backing strip. In testimony whereof, I have signed my name to this specification.

BENJAMIN LASKIN. 

